NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, all time — NPA 913
LEVEL 3 COMMUNICATIONS, LLC - KS 131
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2023-05-12 913-247-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 SPRINGHILL KS
2022-04-26 913-934-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 KANSASCITY KS
2022-03-24 913-934-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 KANSASCITY KS
2022-03-24 913-934-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 KANSASCITY KS
2021-12-07 913-408-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 KANSASCITY KS
2021-06-29 913-399-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 KANSASCITY KS
2021-04-15 913-389-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 KANSASCITY KS
2020-12-08 913-391-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 KANSASCITY KS
2019-08-21 913-856-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 GARDNER KS
2019-06-12 913-900-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 LANCASTER KS
2016-05-03 913-774-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 WINCHESTER KS
2016-04-22 913-803-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 NORTONVL KS
2016-04-11 913-326-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 KANSASCITY KS
2014-09-30 913-267-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 KANSASCITY KS
2014-09-30 913-267-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 KANSASCITY KS
2014-05-21 913-804-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 ATCHISON KS
2014-05-15 913-245-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 OSAWATOMIE KS
2014-05-15 913-828-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 LEAVENWTH KS
2014-04-11 913-380-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 ELWOOD KS
2014-02-20 913-353-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 OLATHE KS
2014-01-29 913-225-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 KANSASCITY KS
2014-01-29 913-701-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 KANSASCITY KS
2013-12-19 913-225-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 KANSASCITY KS
2013-09-25 913-301-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 LINWOOD KS
2013-09-25 913-756-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 BLUE MOUND KS
2013-09-25 913-773-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 EASTON KS
2013-09-25 913-833-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 EFFINGHAM KS
2013-09-25 913-849-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 FONTANA KS
2013-09-25 913-882-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 EDGERTON KS
2013-09-25 913-898-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 PARKER KS
2013-09-06 913-215-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 GARDNER KS
2013-07-05 913-325-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 KANSASCITY KS
2013-06-20 913-543-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 BONNER SPG KS
2013-06-13 913-203-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 ATCHISON KS
2013-05-20 913-305-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 KANSASCITY KS
2013-05-20 913-305-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 KANSASCITY KS
2013-05-20 913-305-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 KANSASCITY KS
2013-05-13 913-828-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 LEAVENWTH KS
2012-11-14 913-954-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 KANSASCITY KS
2012-11-14 913-954-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 KANSASCITY KS
2012-10-11 913-210-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 OLATHE KS
2012-06-21 913-213-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 KANSASCITY KS
2012-02-16 913-721-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 BONNER SPG KS
2012-01-26 913-795-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 MOUND CITY KS
2011-12-16 913-815-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 OLATHE KS
2011-06-22 913-667-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 BONNER SPG KS
2011-05-27 913-241-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 KANSASCITY KS
2011-05-27 913-241-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 KANSASCITY KS
2011-05-27 913-241-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 KANSASCITY KS
2011-05-27 913-241-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - KS 2240 KANSASCITY KS

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.